Results 91 to 100 of about 4,395 (203)

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, EarlyView.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

Associations Between Body Composition and Metabolic Health in Children With Obesity

Maternal &Child Nutrition, EarlyView.
ABSTRACT Childhood obesity is an increasing public health problem with heterogeneous metabolic health outcomes. In children, distinguishing differences in body composition between individuals with metabolically healthy obesity (MHO) and those with metabolic syndrome (MS) may be useful for understanding the impact of body composition on metabolic health.
Desiree Lopez‐Gonzalez, Patricia Clark, Nayely Garibay‐Nieto, Pamela Reyes‐Delpech, Rodolfo Pérez, America Miranda‐Lora   +5 more
wiley   +1 more source

The Ramadan Gambit: The Impact of Fasting on Cognitive Performance

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT More than 2 billion people participate annually in Ramadan fasting, making its potential effects on cognitive performance important for workplaces, education and high‐stakes decision‐making. We study these effects in tournament chess, an incentivised, real‐world cognitive task in which move quality can be evaluated objectively by a strong ...
Samuel Buckland, David Smerdon
wiley   +1 more source

A STEP IN STONE. ONTOLOGIES OF PODOMORPHIC PETROGLYPHS IN SOUTHERN SCANDINAVIAN BRONZE AGE

Oxford Journal of Archaeology, EarlyView.
Summary During the Bronze Age, a particular type of podomorphic petroglyph was produced on the outcrops by the sea in southern Scandinavia. In this text, their distribution, organization and articulation are analyzed in the Mälaren region of central‐eastern Sweden.
Fredrik Fahlander
wiley   +1 more source

Multi-Objective Optimization of Cislunar Navigation Constellations and Mission Validation for Lunar Re-Exploration

Advances in Astronomy
To address the limitations of traditional navigation systems in lunar exploration missions regarding positioning accuracy and coverage, this study proposes a multi-objective optimization framework for the Lunar Navigation Satellite System (LNSS) to ...
Xiao Chen, Zhongkai Zhang, Chonghui Li, Yong Zheng, Lan Du   +4 more
doaj   +1 more source

The role of antibiotics in preventing surgical complications in periodontology and implant dentistry

Periodontology 2000, EarlyView.
Abstract Antibiotics are commonly prescribed in periodontal and implant surgeries, either before, during or after surgery, to prevent postoperative infection and reduce early implant failure. However, the potential benefits may be undermined by the risks of resistance and sensitization, thus requiring a strict indication for prescription.
Zhaozhao Chen, Lan‐Lin Chiou, Javier Calatrava, Hom‐Lay Wang   +3 more
wiley   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

Spaceflight and sport science: Physiological monitoring and countermeasures for the astronaut–athlete on Mars exploration missions

Experimental Physiology, EarlyView.
Abstract Long‐duration spaceflight impacts essentially every system in the human body, resulting in multisystem deconditioning that might impair the health and performance of crewmembers, particularly on long‐duration exploration missions to Mars. In this review, we apply the sport science model of athlete monitoring, testing and training to astronauts;
Luke DeVirgiliis, Nicholas J. Goode, Kurt W. McDowell, Kirk L. English, Robert Novo, Virina Botros, Ginika Agwu, Jessica M. Scott, Lori L. Ploutz‐Snyder   +8 more
wiley   +1 more source

Lunar surface exploration using mobile robots

Open Engineering, 2012
Nishida Shin-Ichiro, Wakabayashi Sachiko
doaj   +1 more source

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

Experimental Physiology, EarlyView.
Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr, Philip N. Ainslie, Trevor Day   +2 more
wiley   +1 more source